H2O2 inducing dissolved oxygen activation and electron donation of pollutants over Fe-ZnS quantum dots through surface electron-poor/rich microregion construction for water treatment

Activated sludge method is mainly used to sewage water treatment of water injection system in oil field, dissolved oxygen of sewage pond plays a important role in the sewage water treatment process. The proportional control algorithm of dissolved oxygen concentration is developed based on a first time delay model, and the parameter values of the controller is determined by using stability margins design approach. Simulation results are provided to illustrate the design procedure and the effectiveness of the proposed methods. When applying to the wastewater treatment system based on activated sludge, this method can achieve a satisfied treating performance with robustness. Simulation results are given to demonstrate the design procedure and the effectiveness of the proposed methods.

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Potential for Real-Time Monitoring and Control of Dissolved Oxygen in the Injection Water Treatment Process

IFAC-PapersOnLine ◽

10.1016/j.ifacol.2018.06.373 ◽

2018 ◽

Vol 51 (8) ◽

pp. 170-177

Author(s):

Petar Durdevic ◽

Chitra S. Raju ◽

Zhenyu Yang

Keyword(s):

Water Treatment ◽

Dissolved Oxygen ◽

Real Time ◽

Treatment Process ◽

Monitoring And Control ◽

Real Time Monitoring ◽

Water Treatment Process ◽

Injection Water ◽

And Control

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Synthesis of carbon quantum dot-surface modified P25 nanocomposites for photocatalytic degradation of p-nitrophenol and acid violet 43

RSC Advances ◽

10.1039/c4ra02707h ◽

2014 ◽

Vol 4 (58) ◽

pp. 30605-30609 ◽

Cited By ~ 24

Author(s):

Fengying Zheng ◽

Zhenhua Wang ◽

Jie Chen ◽

ShunXing Li

Keyword(s):

Quantum Dots ◽

Water Treatment ◽

Visible Light ◽

Photocatalytic Degradation ◽

Carbon Quantum Dots ◽

Chemical Adsorption ◽

Carbon Quantum Dot ◽

Visible Light Driven ◽

Surface Modified ◽

Acid Violet

A new efficient and stable visible light driven photocatalyst, carbon quantum dots (CQDs)-surface modified P25 nanocomposite, was successfully prepared by chemical adsorption of CQDs onto the surface of TiO2 nanoparticles and then used for water treatment.

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Diagnosis for Water and Steam Quality Problem in Taishan Ultra-Supercritical Power Plant

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1044-1045.291 ◽

2014 ◽

Vol 1044-1045 ◽

pp. 291-294

Author(s):

Mao Dong Li ◽

Chen Lin Dai ◽

Jun Ming Zhao ◽

Yu Hui Du ◽

Lin Yang ◽

...

Keyword(s):

Water Treatment ◽

Power Plant ◽

Dissolved Oxygen ◽

Working Condition ◽

Iron Deposit ◽

Feed Water ◽

Steam Quality ◽

Control Effect ◽

Boiler Water ◽

Quality Problem

Water and steam quality during operation must be strictly controlled for ultra-supercritical unit. Changes of indicators in water and steam are supervised, water and steam quality and working condition of boiler water, as well as supervision of water and steam quality are reviewed in this paper. Risks of corrosion and scaling in Taishan power plant is assessed. As a result, control effect of TOC is remarkable in Taishan power plant, content of Cl- and SO42- can satisfy the control standard, that is , risk of corrosion and scaling is low. Dissolved oxygen is significantly exceeded in the condensate polishing desalination device , and there has risk of iron deposit. To convert the feed water treatment from AVT(All Volatile Treatment) to OT(Oxygenated Treatment) can solve the problems above .

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